Nut-lock



" f l NUIT-LOCK.. Y f. ,l

' ToMis-homit-,may Contarini Y a si'ibject Voicthe Emperor; of Japan, residing` at;iMoirntaiirView, inthe countyfof Santa Clara and State of California, have invented certainenewl and -useful-y Improvements f in Nut-Locks, :of which the vfollowing -is a Spe@T vIieatio'nn y y f `My invention relates to nutllocks that will absolutely lock-the. nut ontdalbolt, prevent- Y ing the same fromjarring loeseand working.;

. First, tofprovide aniit-llock. will loel x Y the nutatfa=si3ithlorjlessgrfof?n turn of the' nut. Y

Second, `to .provide a init-lock thatwill f permit the nut to be removedfroin thebolt or stud by manually releasing said lock..

Third,to provide a lnut-lock` that will vnot require a. special wrench. e

Fourth, to provide. a nut-lock that may be Vattached to bolts.` and nuts now in use by slightly altering said bolts and nuts.

Further objects andy advantages will ap- I. pear inthe v'following description and. in the accompanying drawings, forming-a part of j this specification, and then moreparticularly pointed out in the claims, it being undery I k"Fig l, parts broken away.

. Ystood that variouschanges in` form, propor- 30' be resorted to withinv the scope of the aption and minor details of construction may peiided claims.

In the drawings: p. F igure- 1 is an `end view 0f a bolt with nut. and lock attached thereto. Y

Fig. 2 isa sectional view on line 2--2 of Fig. 3 is a sideview of the spring locking member. y, 40

' y Fig. 4 is anedge View of Fig. 3. Fig. 5 is a sectional view on line 5 5 o Fig. lV showing the slotin `the bolt or stud adapted to receive thespring locking memthreads. t Y, Mynut-lock, forming the subject matter of the present invention, consists ofla'U- @shaped springlooking member 1 made of y spring-steel or other suitable material. The

ber shown in Figs. 3 and 4. Fig. vis `a side viewof the threaded portiony of a boltor stud, showing the spring locking member in place.

Fig. 7 is a view showing the spring lock- Y ing member contracted` allowing same'to ybe yremoved by,v disengaging it from the nut `f outer edges ofthe legs lawlbof theespring j specifi*carrertermites'meins#v kspringnlocking lmember 1.v` y .n

It will be seen from the foregoing description that my nut-loek can be applied to bolts and nuts of various sizes and for various Mering memberji arrpioviddwaii a Series eifably; being `poiiitedslightly,upwardor jto-y of "teethorf barbs 2, saidteetliorfbarbspref-` to hold the spring, locking- '.member in 'place' by engagingtlie tlireads'l 'of anut 4.

A 'threaded-boltor stud lisv sliowiiat hav i ing-...a slot 5?`sawedtliere'in',' diametri'c'ally`l K '165 andl Iparallel fwitliilthefaxiswof the boltv or stud and Iof suiicient depth 'to allow the spring locking :member .l-.to fset iin', leaving a fptirtfionv` protruding.beyond'tlie end lofl'th'ebolt'or'stud assliowiiat'bfw The" distancel between the ontei edges' of the le,gS"`1R-1"'of the *spring looking inem! ber l is slightly greater than the diameter of the bolt or stud in which it is used as shown at i2, adapted' to friotionagainst thethreads y i ,3 of the nut 4. In thefthreaded portion of the nut 4 is shown a plurality ofnotches G-G-" extending the full length or the threaded portion and vhaving one wall of each notch parallel withthe radius of the Y bore ofthe nut 4 as shown at 7 and the other y, ivall slantiiig,form1ng inclined surfaces as shown at S adapted to contract the spring"- loclring memberl when the nut 4 is screwed on; the walls 7 formingv shoulders against vwhich the spring looking member l rests .or

engages when force is applied to remove ther nut thus preventing the nut from turning oil until released.-

The part 5b of the spring looking member f l permits of manually springing together the legs ISL-lb which allows the nut 4 Vto be screwed olf the-bolt 5, vafter removing the purposes by` sliglitlyaltering the size and'` shape of the U shaped springv looking mem? be-r land the teeth or barbs 2 to correspond tothe bolt and nut usedlfi -y Y Having thus described my invention, what I' claim as new and desire to-secure by Letonto said boltor stud, said-nut vbeing provided with a plurality ofnotches in theV vthreaded portion, said notches extendingtlie full'length4 of the 4threaded portion of the.,

nnt and having one Wall substantially paralle] Withthe radiusrof the bore'of the nut andthe opposite Wall at an angle thereto-- forming inclined surfaces whereby, `when the ndt is screwedonto the bolt'or stud, the spring locking.4 member will be contracted by said inclined surfaces, and the opposite Wall will` serve as a catch or shoulder to engage the spring locking member to lock lthe nut in place, substantially asshovvn and described.

` of the bolt, of a U shaped spring locking member `adapted to rest Yin said slot; a plurality of teeth or 4barbs Von the outer edges of each leg of the U shaped spring" locking member, said teeth'or barbs pointing slightly toward `the upper` ends of said legs; a nut uutbeing provided With a plurality of notches in the threaded portion thereof, said notches extending the full length of the threaded portion thereof, `one Wall of each adapted-toV be screwed onto-said bolt, the". threads ofwhich engage theteeth or barbs onthe spring locking member thereby hold,V

ing the spring locking member in place, said notch being parallel With the radius of the Y bore of the nut and the opposite Wall at an angle thereto, forminginclined surfaces adapted lto contract said spring locking member `When the nut is screwed onto the bolt, theiirst mentioned Wall serving as a catch or shoulder adapted to engage the spring locking member to lock said nut in place and means whereby the spring locking member' may be y disengaged from" said notches, substantially as shown and described. Y p

In testimony whereof I hereby aiiiX my lsignature this 11th day of Feb., 1919.

GEORGE N. TSUMURA. 

